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New vintage style packaging - you may have noticed some of the PMC packs are changing. However, the clay remains the same and nothing has been changed to the formula. Confused by the new look? The most unusual one is PMC Onefire Sterling which has been renamed PMC 950 Sterling. This has been done for those who choose to hallmark (fired items over 7.78g). However, as no PMC is marked as Britannia (950) silver ignore the 950 and mark as 925 sterling silver as per usual. If you are making to sell, or create items that will be worn on a regular basis fire at 900C for one hour in a temperature controlled kiln. Full details can be found on our product section website www.thepmcstudio.com.